Operating mechanism for geographical globes.



, i. L. HUGHES & T. P. BLYT" OPERATING MECHANISM FOR GEOGRAPHICAL GLOBES.

V APPLICATION FILED APR; 16, 1908.

No. 895,020, j. \PATEKTED AUG. 4, 1908.

PENNSYLVANIA.

OPEBATDQ'G MECHANISM FOR GEOGRAPHICAL GLOBES.

To all'wizom it'q'nay concern:

Be it known that we, Jonx L. Hum-Ins and THOMAS F, ELY, citizens of the United States, residing in est Finley township, in the county of 'ashington and State of Pennsylvania, have invented certain new and useful Improvements in Operating Mechanism for Geographical Globes; and we do hereby declare the following to bee. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to operating mechanism for geographical globes, particularly for school purposes and the object is to provide suitable operating nieansfor revolving .the globe and keeping it pointed in a northwardly direction at all times and varying the distance of the globe with relation to the pivotal point or sun.

Our invention consists of certain novel features and details of construction as will be more fully described hereinafter and finally ings, in which,

shaft is also provided with a worm-gear k,

Figure 1, is a side elevation of our invention. Fig. 2, is a vertical sectional view of the mechanism taken on line 11 of Fig. 1. Fig. 3, is a detail of the rear portion of the supporting arm em loyed. andFig. 4, is a plan view of the ova shaped sprocket wheel.

Similar letters of reference indicate corresponding parts in the several figures of the drawings.

A, represents the frame which may be of any suitable construction, to the top of which is secured a circular plate B. Suitably secured in said frame is the operating mechanism, the construction of which is as'follows: The upright pieces a, and 0-, are provided and secured at their top and bottom ends to two cross pieces I), and 5"- Journaled in the uprights a, and a, are two shafts c, and d, the upper one of which is provided with a worm-gear e, near the center thereofand at one end with a. pinion f. The lower shaft is rovided with two gear wheels 9, and h. gournaled in the lower cross piece b, is the main upright shaft 01. Secured at or near the lower end of which is a bevel gear This which meshes with the gear-wheel g, on the shaftd, and a gear-wheel it, on the opposite Specification of Letters Patent.

Application filed April 16, 1906. Serial No. 311,520.

for the purpose of admitting a shaft 8;

I end of said shaft engages with a pinionf,'on the'shaftc. The worm-gear e, on the shaft 0, is adapted to mesh with a gear'wheel l, which is secured on the lower end of a hollow shaft 111-. This shaft'm, is ada )ted 'to work over the main shaft t'. Screwe or otherwise secured to the upper end of the shaft m, is a bar n, through which the fork n, carrying the rear end of the supporting arm 0, is movably connected. Between the rear end of thesupportmg arm 0, and the bar n, is a spring 0, and on the outer end of said fork is a weight 0", for counterbalancrng the weight of the op osite end of the arm 0.

Secure to the arm 0, are two brackets p, the up er ends of which are provided with l STATES PATENT OFFICE. v

JOHN L. HUGHES AND THOMAS F. ELY, 01- WEST F INLEY TOWNSHIP, WASHINGTON COURT Y, I

Patented Au 4, 19os..

journa s or bearings for receiving a shaftq.

Both ,ends of this shaft are provided with bevel geals g, and g/. The gear q, meshes with a bevel gear 1', secured on the top end of the main shaft i. The gear q", meshes with a double idler gear 1', carried by the upright I r, on the end of the main supporting arm 0. One on the upper part of the double idler gear 1", engages with a bevel gear s", on a shaft 8, to which is secured the globe't.

The upright 1', is hollow up to the idler 1'', On the lower end of this shaftis a sprocketwheel u, and on the top of the plate B, is an oval shaped sprocket-wheel 0, which is stationarily secured thereto, and through which the main shaft i, and hollow shaft 121, pass and work independent thereof. These sprocket-wheels u, and r, are connected to ether by means of a sprocket chain 10. (Tliese sprockets being of the same circumference). The weight of the arm 0, is partly carried by a roller or caster 2:.

Meshing with the bevel gear 1', is a bevel pinion g, which is secured on a shaft 2, and to the opposite end of the shaft 2, is a crank 2.

The extension upright which carries the globe i, is provided \n'ih a socket which fits over the end of shaft s", the purpose of which will appear hereinafter- WVe will now describe the operation of our device, which is as follows: Motion is imparted to the mechanism by means of the crank z, or we may substitute a pulley for the crank and use any suitable motor power. As the shaft 2, is revolvedthe pinion y, on the inner end thereof causes the bevel gear 7', to rotate which in turn causes the main shaft 11, to be moved. The gear 1', on thetop end said shaft which engages with the mounted therein substantiall v asand for the v gear g. imparts motion to 'the shaft g, and the gear g". on the opposite end of this shaft meshing with the idler gear r, and said idler gear being engaged by the gear 8, causes the shaft to rotate which in turn revolves the globe; The worm gear k, on the main shaft i," with the gear 9, on the shaft d, and

' causes said shaft to be rotated, and as the gear 11. on the end of this shaft-(l, meshes with the pinion f, on the shaft 6, motion is imparted to said shaft 0. The worm-gear e, on this shaft engages with the ear I, on the hollow shaft m, and causes said shaft to rotate- The bar 11., carrying the supporting arm n. being secured to the top of the hollow shaft m.-is likewise causcdto revolve.

The relative sizes of the gears and pinions heir-g so proportioned as to cause the globe to revolve 365 times to one complete revolution of the supporting arm 0', am the purpose of the sprockets u, and 'v, and chain 10, b6111 to keep the globe 1n the same position, an

the angle thereof pointing in the same direc-' tion at all times during the complete rc"'olu tion of the support-im arm 0.

The globe is so adjusted or set, that the north pole thereof will at all times point in the direction of the north star and be main tained in such position during the revolution of the supporting arm 0.

. The top end of the shaft 11, represents the position of the sun relative to the earth, and the object of the oval sprocket-wheel '0, is to cause the arm 0, to be moved in and out, illustrating or representin the varying distance ofthe world in relation to the sun during the year.

The 365 revolutions of the globe represent the number of revolutions of the earth 'during the year, and the one revolution of the supponing arm 0', represents the world passmg around the sun one tune during the year.

flaring described our invention, what we claim isi 1- The improvement in geographical globe operating mechanism consisting of a frame into which are secured uprightshaving journaled therein a horizontal shaft carrying a worm-gear, a gear-wheel secured on the lower end of a hollmv-shaft which meshes with said worm-gear, a transverse bar secured to the upper end of said hollow-shaft which carries a fork having secured thereto a supporting-arm, a vertical shaft journaled in the outer end of the su )portingarm and hav ing secured to the ower end thereof a s rocket-wheel and to the upper end the g obe support, an adjustable weight carried by wured on the outer end of said fork, together with a spring bearing against the supp-tming-arm at one end and the transverse bar at its opposite end, said transverse bar and supporting-arm having brackets secured thereto carrying an auxiliary shaft purposesshown and described.

The improvement in geographical globe H operating mechanism, consisting of aframe into wlnch are secured uprights having ;'u1rnaled therein a horizontal shaft carrying a gear-wheel, a main-upright-shaft journaled".

insaid frame and being providedwith a worm-gear which meshes with the gearwheel on said horizontal-shaft; a bevel-gear secured on the lower end of said upr1ght-' shaft and a bevel-pinion secured on the upper end thereof; a main-driving-shaft journa in said frame and upright and provided with a bevel-pinion on its inner end which meshes with the bevel-gear on the lower end of the main 11 right shaft; an auxiliary shaft mounte in brackets carried by the supporting-arm and bar, a bevel-pinion secured on the inner end of said auxiliary-shaft which meshes with the bevel-pinion on the up er end of the main-upright-shaft and a mova le bevel-pinion secured on the op )osite end of said auxilialy-shaft, a double-1 er- )inion on the upright-shaft in the outer end of the supporting-arm; a globe-support connected to the upright-shaft in the outer end of the supporting-arm and a globe-shaft carried by said globe-support and having secured to its lower end a bevel-pinion which meshes with the double-idler-pinion on the said uprightshaft and a globe connected to the upper end of the globe-shaft; an oval shaped sprocket wheel stationarily secured on t 1e top of the frame and a sprocket-wheel on the lower end of the upright-shaft in the end of the supporting-arm and a s rocket-chain connecting said sprocket-whee s; all substantially as and for thcpurposes shown and described.

3. The improvement in geographical globe operating mechanism, consisting of a frame into which are secured uprights having journaled therein two horizontal-shafts, one of i said shafts carrying a worm-gear and a pinion and the other shaft carrying two gear wheels; a main-upright shaft journaled in said frame and having secured thereon a worm-gear which meshes with the gear on the horizontal-shaft, and a hollow-shaft journaled in said frame over the main-upright shaft and )rovided with a. gear-wheel which meshes wit 1 the worm-gear on the other horizontal-shaft, together with a pinion on one of said horizontal-shafts and a gear-wheel on the other horizontahshaft which are adapted to mesh one with the other, for the pur ose of imparting a reverse motion to the 1101 owshaft'and supporting-arm, a bevel-pinion secured on the upper end of said upright-shaft, an auxiliary-shaft mounted in brackets carried-by the su porting-arm and bar, a bevelpinion secured onthe inner end of said auxiliary-shaft which meshes with the bevelpinion on the upper end of the upright-shaft and a movable bevel-pinion secured on the r i let-pinion on the upright-shaft in the outer I purposes described. .end ofthe supporting-arm which meshes In testimony whereof, we have hereunto ,with the movable-bevel-pinion on the auxilset our hands this 9th day'of April, 1906, in

. iary-shaft a globe su ort connected to the the'presence of two witnesses.

' upperend of the upng t-shaft and a globea v JOHN L. HUGHES. shaftv carried by said globe-support, a bevel-' .1 THOMAS F. ELY. 4 Z pinion secured onthe lower end of said globe- Witnesses: v

' shaft and a globe representing the earth se i FRED SPROWLs, v 10 cured to the upperend of said shaft all to be HCARRY C. ELY.

o posite end of said auxiliary-shaft, a doubleoperated substantially as shown and for the I 

